Operation device for liquid leakage prediction system



FIG. 1 is a front view of an operation device for liquid leakage prediction system in accordance with the present design;

FIG. 2 is a rear view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof; and,

FIG. 7 is an enlarged view of operation panel thereof.

The broken lines shown in the drawings represent portions of the operation device for liquid leakage prediction system that form no part of the claimed design. The dashed-dot-dashed lines indicate a boundary between the claimed portions and unclaimed portions of the design. 

CLAIM The ornamental design for an operation device for liquid leakage prediction system, as shown and described. 